Red blooded white American male
- Oct 30, 2009
- Reaction score
2 Part expanding foam. I have used lots of it before. I have some leftover 2 pound. But what is the true advantages of using 4 lb, 6 lb, or 8lb. All these weights you can get through rocket vendors. Obviously, the heavier foam is tougher and harder. When foaming the inside a fin can between airframe and motor tube are there any advantages or disadvantages of using either kind?